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<h1 style="text-align:center;"><strong> Python3实现批量下载百度搜索图片</strong></h1><pre>原文请参考：<em><span style="color:#990000;">http://blog.csdn.net/guyuealian/article/details/78730200</span></em>，这里做了部分修改，增加了关键字word定义，下载图片数量的imageNum设置，以及图像保存路径和名字的设置</pre><pre>需要requests模块的支持，直接使用pip安装即可，命令：pip install requests</pre><p></p><pre class="python"># -*- coding: utf-8 -*-

import json
import itertools
import urllib
import requests
import os
import re
import sys
print("hah")
#############################################################
word="眼镜"                 #图片搜索的关键字，目前仅支持单个关键词
imageNum =10;               #下载图片的数目
saveImagePath="glasses3"    #保存图片的途径
indexOffset=0               #图像命名起始点
#############################################################

str_table = {
    '_z2C$q': ':',
    '_z&amp;e3B': '.',
    'AzdH3F': '/'
}

char_table = {
    'w': 'a',
    'k': 'b',
    'v': 'c',
    '1': 'd',
    'j': 'e',
    'u': 'f',
    '2': 'g',
    'i': 'h',
    't': 'i',
    '3': 'j',
    'h': 'k',
    's': 'l',
    '4': 'm',
    'g': 'n',
    '5': 'o',
    'r': 'p',
    'q': 'q',
    '6': 'r',
    'f': 's',
    'p': 't',
    '7': 'u',
    'e': 'v',
    'o': 'w',
    '8': '1',
    'd': '2',
    'n': '3',
    '9': '4',
    'c': '5',
    'm': '6',
    '0': '7',
    'b': '8',
    'l': '9',
    'a': '0'
}

# str 的translate方法需要用单个字符的十进制unicode编码作为key
# value 中的数字会被当成十进制unicode编码转换成字符
# 也可以直接用字符串作为value
char_table = {ord(key): ord(value) for key, value in char_table.items()}

# 解码图片URL
def decode(url):
    # 先替换字符串
    for key, value in str_table.items():
        url = url.replace(key, value)
    # 再替换剩下的字符
    return url.translate(char_table)

# 生成网址列表
def buildUrls(word):
    word = urllib.parse.quote(word)
    url = r"http://image.baidu.com/search/acjson?tn=resultjson_com&amp;ipn=rj&amp;ct=201326592&amp;fp=result&amp;queryWord={word}&amp;cl=2&amp;lm=-1&amp;ie=utf-8&amp;oe=utf-8&amp;st=-1&amp;ic=0&amp;word={word}&amp;face=0&amp;istype=2nc=1&amp;pn={pn}&amp;rn=60"
    urls = (url.format(word=word, pn=x) for x in itertools.count(start=0, step=60))
    return urls

# 解析JSON获取图片URL
re_url = re.compile(r'"objURL":"(.*?)"')
def resolveImgUrl(html):
    imgUrls = [decode(x) for x in re_url.findall(html)]
    return imgUrls

def downImg(imgUrl, dirpath, imgName):
    filename = os.path.join(dirpath, imgName)
    try:
        res = requests.get(imgUrl, timeout=15)
        if str(res.status_code)[0] == "4":
            print(str(res.status_code), ":" , imgUrl)
            return False
    except Exception as e:
        print("抛出异常：", imgUrl)
        print(e)
        return False
    with open(filename, "wb") as f:
        f.write(res.content)
    return True


def mkDir(dirName):
    dirpath = os.path.join(sys.path[0], dirName)
    if not os.path.exists(dirpath):
        os.mkdir(dirpath)
    return dirpath

if __name__ == '__main__':
    print("=" * 50)
   # word = input("请输入你要下载的图片关键词：\n")

    dirpath = mkDir(saveImagePath)

    urls = buildUrls(word)
    index = 0
    for url in urls:
        print("正在请求：", url)
        html = requests.get(url, timeout=10).content.decode('utf-8')
        imgUrls = resolveImgUrl(html)
        if len(imgUrls) == 0:  # 没有图片则结束
            break
        for url in imgUrls:
            if downImg(url, dirpath, str(index+indexOffset) + ".jpg"):
                index += 1
                print("正在下载第 %s 张" % (index+indexOffset))
                if index==imageNum:
                    break
        if index==imageNum:
            print("---------------------下载完成----------------------")
            print("下载结果保存在脚本目录下的文件夹中，文件名字：" + saveImagePath)
            break</pre><br /><br /><p></p>运行效果：<p></p><p><br /><br /></p><p></p><p><br /></p><p><br /></p>   
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				<h2>Python3爬虫抓取百度图片中的图片</h2>
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				<h2>python3自动批量下载花瓣网中“我喜欢”的图片</h2>
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                        本人电子系，只为一学生。心喜计算机，小编以怡情。
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                        &#39;&#39;&#39;
Created on 2016年3月6日

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                    <h2>Python 批量下载文件</h2>
                    <div class="summary">
                        批量下载第一步，将下载地址保存在一个文件中，如gaokaogaokaohttp://wenku.baidu.com/api/interface/download?doc_id=41cbbc0471fe910
http://wenku.baidu.com/api/interface/download?...
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                        <li class="user_name">u012063703</li>
                        <li class="time">2015-11-25 10:44</li>
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                    <h2>python3.4爬虫批量下载音乐</h2>
                    <div class="summary">
                        最近在学习python，使用的版本为python3.4，开发环境为使用Pydev插件的eclipse。正好觉得http://www.dexiazai.com/?page_id=23上的音乐不错，决定使用python批量下载下来。
&#160;&#160;&#160;&#160; 1、音乐来源
&#1...
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                        <li class="time">2015-05-15 17:49</li>
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                <dd>
                    <h2>python3 批量下载网页所有图片</h2>
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                        这是一段代码
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                        <li class="time">2016-07-11 15:35</li>
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@qq_37287870:不好意思，图中标记有误，应该是将0.5*sqrt(80)改为0.5*sqr...
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请教一下大家，在最后一步归类到第三类时，点X3到点x7的距离：D33为 【根号17】=4.12 是小...
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想要word的版本，邮箱1115245864@qq.com。感激不尽
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老哥 能发我一份张志华老师的讲义吗 你给的链接用不了
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楼主，网站和百度网盘都打不开啊！ 能将讲义邮给我学习一下吗？非常感谢感谢！215492800@qq....
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